Combined micrometer height-gage and indicator.



W. B. POWELL. comsmfin MICROMETER HEIGHT GAGE AND mmcmom APPLICATION FILED 1AN,25.19|8. I

Patented July 16, 1918.

'lllllllllllllllllllllllllllllllllllllllllllll WBPamzz WAL'IEB B. POWELL, OF WASHINGTON, DISTRICT OF COLUMBIA.

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Appllution men January as, me. Serial No. 213,177.

To all whom it may concern:

Be it known that 1, Warm B. Powell,

a citizen of the United States, at

This invention relates to height gages and" the primary object of t e invention is the provlsion of an improved height gage especially adapted for accurate wor'k'in which the usual vernier scale is dispensed with and a dial indicator substituted therefor, which will give theaccurate reading of the to the thousandth of an inch and thus eliminate the usual inconvenience associated with reading the ordinary Vernier scale.

Another Object of, the invention is the provision of an improved micrometer height which is durable; eflicient inuse, onegage and indicator having a sliding arm which carries an adjustable. scriber, the arm being mounted on a graduated standard,the

scriber being so arranged as-to engage the plunger of an indicating dial, which has its face graduated to indicate thousandths of an inch so that upon adjusting the-somber,

the plunger of the dial will be operated and thus rotate the pointer and giving the reading to a thousandth of an inch.

A further object of the invention isthe rovision of a micrometer he' ht gage and Indicator in which the posltion of the scriber can be reversed so that the same-can be usedfor measuring recesses, grooves and the like. 1 g

A still further object of the invention is to provide a' device-of the above character,

that is simple and-easy to construct, and one that can be placed upon the market at a reasonable cost.

' With these and other objectsin view, the

invention consists in the novel construction, arrangement and formation as will y described, claimed ,andillustrated in the accompanying drawing forming a. part thereof, m which: w 7

Figure 1 is a side elevation of my improved height gage.

Fig. 2 is a fragmentary front elevation I engag of m improved height gage showin the dial iiidicator, and Fig. 3 is adetail transverse section taken on the line 3-3 of Fig. 1. Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout the several news, the numeral 1 generall indicates the improved device, which inc udes the base 2, which supports a vertical standard or measuring bar 3. The standard 3 has a flattened side 4 having a scale 5 thereon. .Slidably associated with the standard 3 is the outwardly extending arm 6 which has its inner end enlarged and provided with a member 7 which is formed relatively long Patented July 16, 1918.

and extends below the arm 6. The member Y motion is precluded. The member 7 isformed relatively long as stated above for the standard to prevent swagging or twistmg of the arm 6 with relation to the standard. Themember 7 is also provided with'a vertically extending recess 8 communicating with the recess receiving the graduated standard, through which the graduations of the standard can be readily.

seen and an index pointer 9 is formed on the member so as to registerwith the scale.

Slida'bly mounted on the-standard 3 above the member 7 is a collar 10 having a pair of spaced outwardly extending ears 11 between which is positioned the adjusting nut 12 which is turned on the screw 13, which extends through the ears 11 and has its lower end rigidly secured to the arm 6. The outer surface of the nut is knurled so that a finger grip can be readily obtained on the same.

A set screw 14 is carried by thecollar 10 for engaging the standard 3 to lock the collar thereto. Thus the arm 6 is moved to the approximate height of the article being measured and the. set screw of the collar turned so'as to lock the same on the standan} and the nut 12 is then rotated until the finer adjustmentof the arm 6 is obtained. A set screw '15 is carried by the member 7 any preferred construction and has the pointer 17 which is operated by a spring for engaging the standard for locking the member 7 thereto after the accurate adjust such as a. rack and. a pinion.

V pressed plunger '18. The connection be tween thepointer and lunger does not form,-

' 0 minus reading from the zero oint.

The member 7 is provide with a vertically extending rib 20 on one face thereof directly below the arm 6 and slidably mounted on the rib 20 is an outwardly .ex-

1 tending measuring arm 21 which extends in the same direction as the arm 6 and the same has its inneriend provided with a groove to slidably receive the rib. The measuring arm 21 is provided with. a pocket 22 in which is fitted the knurled adjusting nut 23 which is turned upon a screw 24, which extends through the measuring arm 21 and has its upper end rigidly secured to the arm 6 i and upon movement of the nut 23 the 5 measuring arm will be slid upon the rib.

The outer end of the measuring arm is bent downwardly at right angles as at 25 and has its free end recessed as at 26 to receive the inner'end of the scriber 27. The scriber is provided with an opening which registers,

with a threaded recess in the outer end of the arm and a set Screw 28 is fitted in the recess and holds the scriber in position.

' The scriber extends outwardly from the 5 vmeasuring arm and the plunger 18 of the dial indicator rests on the same and movement of the scriber is indicated by the dial indicator to-a thousandth of an inch. The under surface of the'scriber at the outer end I 40 thereofis beveled as at 29 so as to take a fine-reading and the same can be turned over and used for measuring recesses, grooves and the like. In operation of the improvedm'icrometer 5 height gage and indicator, the device is positioned with the base 2 against the member from which the height is to be determined 1 and the set screws 14 and 15 are loosened and the arm 6 carrying the measuring arm therewith is then moved until the measurement of the article is roughly obtained and then the upper set screw 14 is tightened which locks-the collar 10 to the standard and the adjusting nut 12 is then rotated until lower set screw 15 is tightened and the arm 26 is locked to the standard. This gives the measurement of the article to one-half, one quarter or one-eighth inches'and to obtain the finer adjustment the adjusting nut 23 is turned to slowly move the scriber point until the same is at the desired position, which will allow the plunger to move up or down, according to" the movement of the scriber and the dial will give the fraction of the,

of my device will necessarily vary, I desire the indicator dial' is placed directly on the justed position on said standard, a gage carscriber having plane upper'and lower surthe finer adjustment is obtained and then the ard, a vertical rib formed on the arm, a

.be added or subtracted from the rough measurement indicated by the pointer 9 carried by the member 7. The scriber can be slid over the surface of the article being measured and any variations in the height thereof can be readily determined by rotating the nut 23 which will indicate the variations on the dial.

The scale 5 begins at a point aboveithe base 2 so as to account for the arm 21 being offset from the pointer-9 from which the measurement is taken.

In practice, I have found that the form of my invention, illustrated in the accompany-- ing'drawin'g and referred to in the above description, as the preferred embodiment, is the most efli'cient and practical; yet realizing the conditions concurrent with the adoption to emphaslze the fact that varlous minor changes in details of construction, propor- .tlOILfilld arrangement of parts may be resorted to, when required without sacrificing any of the advantages of my invention as setforth' When the device is to be used for determining variations in the height of the article being measured, the scriber 27 is removed from the armand the plunger 18 of upper surface of the article being measured, and the same can he slid over the surface of the article and the variations in the height thereof will be readily seen. 109 v .What I claim as new is y 7 1. A height gage including a graduated standard, a member adjustable on the standard, meansfor securing the member in ad-' ried by the member, a scriber adapted for cooperation with the gage, and means. ad-

justably securing the scriber to the member. 2. A height gage including a graduated standard, an arm adjustable on the stand- 110 ard, anmdex pomter carried by the arm and cooperating with the graduations on the standard, a measuring arm adjustable with relation to the first arm, a fiat reversible faces carried by the measuring arm, and a dial gage carried by the first arm for cooperation with and operated by the scriber.

3. A height gage including a base, a graduated standard, an arm having one end 130 slidably mounted on the standard, a' dial indicator carried by the other end of the arm, an index pointer carried by the arm and cooperating with the graduations on the standmeasuring arm slidably mounted on the rib and projecting in the same direction as the, first mentioned arm, means to adjust the measuring arm on the rib, and a scriber carried by the free end of themeasuring arm the pur ose specified.

and engaging the dial indicator, as and for 4. A eight gage including a graduated standard, an arm adjustable on the standard, an index pointer carried by the arm and cooperating with the graduations on the standard, a measuring arm adjustable with relation to the first arm, a dial indicator carried by the first arm, and a scriber carried by the measuring arm for cooperation with the gage, the lower surface of the scriber at the outer end thereof being beveled upwardly,

and means to detachably hold the scriber in position, whereby the same can be turned over so as to bring the beveled surface of the 15 same on the upper edge thereof, as and for,

thepurpose specified. In testimony whereof I afix my signature in presence of two witnesses.

WALTER B. POWELL.

Witnesses:

BENNETT S. JONES, GEORGE W. WRIGHT. 

